Bleeding the radiator - hissing air, but no water?

[helpneeded222]

Hi,

So one of my radiators doesn't get hot at the top. I tried bleeding it, but after the hissing stops, there is no water.

Could anyone tell me why this is? And what do I need to do to rectify this problem?

Thank you

 

[SimonJohns]

What boiler do you have

Have you topped the pressure up on boiler to 1bar

 

[helpneeded222]

I don't know a lot about it. But on it it says: Worcester 24CDI - if that means anything to you?

 

[southcoastboile]

yeah pressurised system, you need to have a special worcester key to top up the pressure on that boiler

 

[helpneeded222]

But if that was the case. How comes it doesn't affect the rest of the radiators?

 

[quality]

Is your heating still working after the hissing stops or do you have to top up the water pressure ?

 

[SimonJohns]

Yes. You should have a silver braided hose under your boiler. And on the display you will have a guage that displays the pressure in system

Once you have found them 2 items. This video will show you the rest http://www.youtube.com/watch?v=23vahQHOnGo&feature=youtube_gdata_player

 

[helpneeded222]

Heating still working. Just goes back to how it was

 

[southcoastboile]

simon, its probably wont have a braided hose as its an integral fill loop on this boiler and theres a key that slots into it while you unscrew a grey knob, the others all work as they are obviously full, the boiler will operate alot better if kept up to correct pressure.

 

[desrob]

Hi,

So one of my radiators doesn't get hot at the top. I tried bleeding it, but after the hissing stops, there is no water.

Could anyone tell me why this is? And what do I need to do to rectify this problem?

Thank you[/QUOTEshut valves ,empty radiator,take of wall and blast it through with hose pipe, before putting back on get your dishes bowl and open valves see how they react,

 

[SimonJohns]

Hi,

So one of my radiators doesn't get hot at the top. I tried bleeding it, but after the hissing stops, there is no water.

Could anyone tell me why this is? And what do I need to do to rectify this problem?

Thank you[/QUOTEshut valves ,empty radiator,take of wall and blast it through with hose pipe, before putting back on get your dishes bowl and open valves see how they react,

Not trying to cause an argument but why do you suggest flushing the rad if it's getting hot at the bottem?

 

[desrob]

Not trying to cause an argument but why do you suggest flushing the rad if it's getting hot at the bottem?

yes you are...!i've seen a few rad blocked at the top with oxide

 

[southcoastboile]

how can something so simple be up for so much debate

 

[helpneeded222]

So I've just tried to refill the tank with that key thing. But nothing seems to happen when I turn the little grey screw, can't hear any sound of water rushing, and the dial doesn't move. Maybe the screw thing is broken? because it doesn't seem to tighten or loosen :/

Thanks for the replies btw!

 

[southcoastboile]

sometimes they slip n the white plastic bit it pushes on to, try taking it off and turning it with pliers, be carefull though if you leave it on or dont shut it back off fast enough you could need a new prv.